public class Test {
    public static void main(String[] args) {
        BinaryTree binaryTree = new BinaryTree();
        BinaryTree.TreeNode root = binaryTree.createTree();

        System.out.println("前序遍历:");
        binaryTree.preOrder(root);
        System.out.println();

        System.out.println("中序遍历:");
        binaryTree.inOrder(root);
        System.out.println();

        System.out.println("后序遍历:");
        binaryTree.postOrder(root);
        System.out.println();

        System.out.println("获取第K层节点的个数:");
        System.out.println(binaryTree.getKLevelNodeCount(root, 3));
        System.out.println();

        System.out.println("获取二叉树高度:");
        System.out.println(binaryTree.getHeight(root));
        System.out.println();

        System.out.println("层序遍历:");
        binaryTree.levelOrder(root);
        System.out.println();

    }
}
